Boiler cleaner



Al1g- 9, 1938. F. w. LnNAKER 2,126,565

BOILER CLEANER Filed Feb. 27, 1935 e sheets-sheet 2 )NVE/vrom FEEDER/cfrw. mA/ven' Aug. 9, 193s.

F. w. LINAKER l 2,126,565

BOILER CLEANER Filed @13.27, 1955 e sheets-sheet s /NyE/vro e:FFEDEE/C/r l/V. L/NA KE@ Aug., 9, 1938., F. W. I INAKER BOILER CLEANERFiled Feb. 27, 1955 e sheets-sheet 4 By v Hrro/A/Er.

Aug. y 193..

F. W. LINAKER BOILER CLEANER Filed Feb. 27, 1955 e sheets-sheet 5 27 /04f F/Gz 25.

| 1- mu f YW-FQQ Imag., 9, W38.. F. W. LINAKER M6565 4 BOILER CLEANERFiled Feb. 27, 1935 6 Sheets-sheet 6 fag '5y L? @TTQENEK Patented Aug.9, 1938 UNITED STATES PATENT OFFICE 3 Claims.

My invention has relation to improvements in boiler cleaners, and itconsists in the novel features of construction more fully set forth inthe speciiication and pointed out in the claims.

The invention is primarily directed to that type of boiler cleanerwherein a blower, provided with longitudinally disposed nozzles, isdisposed across a bank of boiler tubes and arranged for movement so thatsteam may be directed to different parts of the boiler to removedeposits from the boiler tubes. The valve casing which contains thevalve for controlling the discharge of steam against the boiler surfaceshas mounted on it actuating mechanism for the blower tube, and in thepresent instance said mechanism is arranged to rotate the blower tube byimpulses, the tube remaining stationary between rotation impulses so asto permit the steam to play upon the boiler surfaces for a suicientlength of time to effectively remove the deposits therefrom.

Among the objects of the present invention are the following:

1. To provide a boiler cleaner having a single actuating means for boththe steam control valve and the blower tube.

2. To embody in the blower tube rotating mechanism a ratchetdevicewhereby said tube is rotated by steps or impulses, and comes to acomplete rest between impulses.

3. To provide separate means for controlling the valve and for operatingthe blower tube, but associating both of said means with a singleactuating means so that by moving in one direction the valve alone willbe operated, and by moving in the opposite direction after the valve isoperated, the blower tube alone will be actuated.

4. To completely separate the valve with its operating mechanism andblower tube operating mechanism from the blower support and from theblower head, although associating the parts for separate operation by asingle means.

These objects together with the advantages inherent in the inventionwill be better apparent from a detailed description of the same inconnection with the accompanying drawings, in which:

Figure 1 is a front elevation of my improved boiler cleaner; Fig. 2 is aside elevation of the head thereof, support, and the actuating mechanismmounted on the valve casing, the blower tube and steam supply pipe beingbroken away; Fig. 3 is a vertical, middle, longitudinal section taken onthe line 3-3 in Fig.` 1; Figs. 4 and 5 are vertical cross-sectionaldetails taken on planes indicated by the lines 4-4 and 5 5 in Fig. 3Fig. 6 is a cross-sectional detail similar to that of Fig. 5, exceptthat the valve mechanism has been actuated to open the valve; Fig. 7 isa sectional detail similar to that shown in Fig. 6 with the valveactuating mechanism restored to its at rest position while the Valve isopen; Figs. 8 and 9 are vertical cross-sectional details taken on planesindicated by the lines 8-8 and 9-9 in Fig. 3; Fig. 10 is a sectionsimilar to that shown in Fig. 9 with the valve actuating cam in positionto hold the valve open; Figs. 11 and 12 are vertical cross-sectionaldetails taken on planes indicated by the lines I i-l I and I2--l2 inFig. 3; Fig. 13 is a section similar to that shown in Fig 12 with theblower tube actuating mechanism set to impart a rotation impulse to theblower tube; Fig. 14 is a vertical cross-section similar to Fig. 13showing the actuating mechanism at the beginning of such rotationimpulse; Fig. l is a vertical section similar to Fig. 14 with theactuating mechanism at the end of the rotation impulse; Fig. 16 is asection similar to that shown in Fig. 13, except that the cams and pawlsof the blower actuating mechanism have been reversed to impart movementto the blower tube in a direction opposite to that in which the blowertube will rotate in Fig. 13; Fig. 1'7 is an elevational detail of theoscillating stop for arresting movement of the blower tube at the endsof its blowing arc; Fig. 18 is a vertical, sectional detail similar tothat shown in Fig. 4, except that only the clutch for the blower tubeactuating mechanism and actuating wheel hub are shown, the periphery ofthe actuating wheel being broken away; Fig. 19 is a diagrammatic view ofthe associated parts showing said parts ior the at rest position of theblower; Fig. 20 is a diagram of the same parts showing their positionwhen the operating chain has been pulled to open the steam valve, butbefore the blower tube has been moved; Fig. 20a is a diagram showing thepositions of the parts after the operating chain has been released; Fig.21 is a diagram of said parts showing their respective positions afterthe operating chain has been pulled to rotate the blower tube; Fig. 22is a diagram of the same parts showing their respective positions afterthe blower tube has been moved one step along its blowing arc; Fig. 23is a diagram of the samelparts showing their respective positions afterthe operating chain has been pulled to effect a closing of the steamvalve after the blower tube has reached its position at the end of theblowing arc; and Fig. 24 is a diagram of the same parts showing theirpositions after the operating chain has been released and the valveactuating parts permitted to return to their at rest position. In thisposition I have the same conditions that exist in the at rest positionshown in Fig. 19, except that the blower tube has been rotated through a360 arc, and for the next blowing operation will be rotated in adirection opposite to that in which it was rotated by the operationcommenced in Fig. 21. Fig. 25 is a side elevation of a modified form ofmy improved boiler cleaner shown applied to the boiler, part of the wallof which is shown in section;

Fig. 26 is a front elevation of the modified form.

of boiler cleaner; Fig. 27 is a cross-sectional detail taken on the line21--21 of Fig. 25 with the valve and blower actuating mechanism in theirat rest positions; Fig. 28 is a section similar to that shown in Fig. 27with the valve operating lever slightly moved at the beginning of theoperation for opening the steam supply valve; Fig. 29 is across-sectional detail taken on the line 29--29 of Fig. 25 showing thepawls for actuating the blower tube ratchet in their at rest position;Fig. 30 is a cross-sectional detail taken on the line 30-30 of Fig. 25showing the stop mechanism for limiting the movement of the blower tubeactuating lever; Fig. 3l is a section similar to that shown in Fig. 27,except that the valve actuating lever has been moved to its position forfully opening the steam supply valve; Fig. 32 is a section similar tothat shown in Fig. 29, except that one of the pawls for actuating theblower tube ratchet has been disengaged from said ratchet by themovement of the valve actuating lever to the position shown in Fig. 31;Fig. 33 is a section similar to that shown in Fig. 28, except that theblower tube actuating lever has been moved downwardly to eiect a partialrotation of the blower tube; Fig. 34 is a section similar to that shownin Fig. 29, except that the right hand pawl has been moved to a positionto impart a rotation impulse to the blower tube ratchet; Fig. 35 is amiddle, longitudinal, sectional detail taken on the line 35-35 of Fig.26 with parts broken away; and Fig. 36 is a face view of the combinedratchet and brake member.

Referring to the drawings, B indicates the wall of a boiler on which myimproved boiler cleaner is mounted. According to established practice, ahollow casing I, known as a wall sleeve, is xed in an opening O in theboiler wall and a supporting member 2, called the wall plate, is securedby suitable bolts 3 to a iiange 4 formed on the wall sleeve I. The wallsleeve plate 2 is provided with a bracket 5 which carries the operatinghead A through an adjustablev plate 6, coiled spring 1 and saddle member8. The saddle member 8 has a centrally disposed boss 9 from whichprojects a stud I on which is adjustably positioned a washer II by meansof a nut l2. The stud I0 passes through vthe coiled spring 1 andsuitable openings I3 and I4 in the plate 6 and bracket 5, respectively,so that the weight on the operating head is resiliently supported by thespring 1.

The head A includes a supporting bracket I for supporting the valvecasing I6 and has a flange i1 formed on its outer end on which is iixeda gear I8 so that as the gear I8 is rotated the head A will be rotatedwith it, the bearing saddle 8 serving as a support for the head. Thebracket I5 is provided with a ring 20 on its inner end, said ring havinga marginal recess 2| and which, together with the opposed marginalrecess 22 of a coupling member 23, forms a channel for receiving thesaddle 8.

The valve casing I6 has a steam outlet branch I6 provided with athreaded opening I9, in which is screwed one end of a tubular memberI9', the other end of said member passing through the ring 20 and havinga conical flange 24 formed on it. Between the conical flange 24 and thering 20 is a bearingelement 25 held tightly in place by the couplingmember 23, a threaded flange 23 of which is screw-threaded to receivethe outer end 26 of the blower tube T.

The coupling member 23 is bolted to the ring 25 by a plurality of bolts21. Thus the bearing element 25 is frictionally held between the bracketI5 and the coupling 23 so that it will rotate with these elements whilethe tube I9 will remain stationary. In order to make the joint betweenthese movable and stationary parts steam-tight, suitable packingmaterial 28 is packed in the space behind the bearing element 25 andheld in place by means of a gland 29 carried by the 'bracket I 5 andmaintained in close contact with the packing 28 by means of springs 35disposed over studs 3| and coniined between the gland 29 and a washer 32held in place by nuts 33, 34. The construction of the boiler cleanerhead which has just been described is similar to that of my copendingapplication Serial No. 755,135, led November 28, 1934, and will not befurther described.

The valve construction of the present application is also the same asthat of above said application and may be briefly described as embodyinga main steam valve 35 operable in a cage 35 and a pilot valve 31 withinthe main valve, said pilot valve being formed on the valve stem 38,which traverses a stuffing-box 39 in the top wall 4!) of valve casing IGand also a guide bracket 4I formed integral with a supporting bracketand bearing 42 for the valve actuating and blower tube mechanism, whichforms the subject-matter of the present invention and will be describedhereinafter. A coiled spring 43 operates between stuiiing-box 39 and anut 44 on the valve stem 38 and, of course, is for the purpose ofquickly restoring the valve to its seat when the mechanism is actuatedto close the same.

The valve actuating mechanism comprises a chain wheel 50 rotatablymounted on the outer end of a shaft 5I carried in the sleeve or hollowshaft 52 which is mounted in bearing 42. Within the groove 53 of saidchain wheel are a plurality of equally spaced pins 54 for engaging withchain 55 by which the wheel is operated. and within the rim 56 of saidwheel are a plurality (eight in the present instance) of ratchet teeth51. A yoke 58 is mounted for rotation on the outer end of bearing 42 andon the hub 50 of chain wheel 58 and has a boss 59 projecting forwardlyso as to come within the rim 55 of wheel 50, which boss has two sockets68 and 6I formed in it, the former being the outermost and openingtoward the chain wheel rim 56, and the latter being the innermost andopening between the sides 62, 62 of the yoke. A bolt 63 is disposed insocket 60 and has a spring 64 behind it so as to constantly urge thebolt outwardly so that it will ride on the inner surface of rim 56 andengage the ratchet teeth 51 thereon. A four-toothed ratchet 65 anddouble acting cam 66 formed integral with said ratchet is xed to thehollow shaft 52 (or integral therewith) in the space between the sides62, 62 of yoke 58, and a pawl 61 is pivotally carried by the outer side62 of the yoke so that its engaging part 68 will engage the teeth of theratchet 65. The pawl 61 has a forward extension 69 in which there is apin 10 for receiving one end of a coiled spring 1| disposed withinsocket 6I in the boss 59. Thus the spring 1I will keep the pawl 51 inengagement with the ratchet 65. Projecting upwardly from the bracket 4Iis a lug 12, on which is pivotally mounted a lever 13, which projectslaterally from its pivotal point over the valve stem 38 and againstwhich cam 86 operates so as totake the wear which would otherwise comeon the end of the valve stem.

The side 62 of the yoke 58 is substantially triangular in shape, at oneangle of which the pawl 61 is pivoted, and at the other two angles`there are points 14, 14 bent slightly inwardly so as to come in linewith the outer end of bracket 4I, against which these points willimpinge in the operation of the valve mechanism so as to serve as stopmembers to limit the rotation of the yoke to an angle of 90. A coiledspring 15 is disposed about the bearing 42 and has one end secured toarm 62 of yoke 58 and the other end fixed to the bracket, the purpose ofwhich is to restore the yoke 58 to its at rest position after it hasbeen actuated to open the valve. This will be more fully explained inthe operation of the invention.

The mechanism for actuating the blower tube T includes the chain wheel58 on the outer face of the hub 50 of which is a clutch element 16 whichengages clutch element 11 of the clutch member 18 when the chain wheel58 is turned in a clockwise direction when pulling on the right handside of chain 55. Clutch 18 is keyed or otherwise secured to shaft 5I sothat the turning of the chain wheel 50 in a clockwise direction willrotate the shaft 5|, on the inner end of which is fixed an eccentric 19.The hollow shaft 52 terminates short of eccentric 19 and has a pair ofcams 88, 8| fixed on its inner end. The eccentric 19 operates within araceway 82 adjacent to a frame or yoke 83 encasing the cams 80 and 8|and rotatably mounted on the branch I6 of valve casing I6. The raceway82 forms the upper part of a frame 84 which is rotatably mounted on aring 85 formed on the outer end of bracket I5. Thus the frame 83 andframe 84, being secured together at their margins by screws 86, arecapable of oscillating or rocking back and forth as a single unit.

Pivotally mounted within the frame 83 below the cams 88 and 8| on pinsp, p are a pair of pawls 81 aind 88 having rearwardly extending levers89 and 98, respectively, extending beneath the cams 80 and 8| which areadapted to actuate the pawls by contact with said levers. Each pawl 81,88 has a downwardly extending nose n for engagement with the teeth ofthe gear wheel I8 and when the pawls are not otherwise restrained theywill by their own weight drop so that said nose will mesh with the teethof said gear.

A stop pin 9| projects forwardly from the gear I8 and cooperates with astop member 92 pivotally mounted on a bolt 93 xed into the valve casingI6. The stop member 92 is in the form of a lever having its lower arm 94operating between lugs 95, 95 projecting upwardly in spaced relationfrom ange f of valve casing I6. Said ange f has a second flange 96bolted to it, into which is screwed a steam supply pipe 91.

The foregoing completes the description of the construction of the mainform of my improved boiler cleaner, the operation of which will bebetter understood from the following description in connection with thediagrammatic views, Figs. 19 to 24, inclusive.

In thediagram Fig. 19 the operating parts of the blower are shown intheir at rest position, in which they are also shown in Figs. 1 to 5,inclusive, and Figs. 8, 9, 11, 12 and 17, inclusive. The valve 35 isclosed and the stop pin 9| is in engagement with the stop member 92. Ifthe operator now pulls on the left side of chain 55 the wheel 58 will berotated in a counter-clockwise direction, but the shaft 5| will remainstationary because of the lost motion or play between the clutchmembersl 16 and 11.

In its rotation through 90 the wheel 50 will rock the yoke 58 through anangle of 90 because of the engagement of one of the teeth 51 with bolt63 carried by the yoke. As the yoke 58 carries the pawl 61, this pawlwill also be moved through an angle of 90 and through its. engagementwith ratchet rotate the ratchet and the cam 66 through an angle of 90.The rotation of the cam 66 depresses the lever 13 and valve stem 38 soas to open the valve. The valve will be fully opened when the yoke 58has moved through an angle of 90, at which time one of the points 14will engage with the outer end of bracket 4| to arrest any furthermovement of said yoke. The movement of the wheel 58 obviously is alsoarrested at this time and the operator knows that the valve 35 is fullyopen. Since the hollow shaft 52 is fixed to the cam 66, the hollow shaft52 will also rotate through an angle of 90 while the valve 35 is beingopened, as just described, and since the cams 88 and 8| are fixed on theinner end of shaft 52 said cams will also be rotated through an arc of90. Thus at the end of the 90 rotative movement of the Wheel 58 thevalve 35 has been opened and the respective parts have assumed theposition shown in the diagram Fig. 20. It will be observed that in Fig.19 both the pawls 81 and 88 were in engagtment with the teeth of gearwheel I8, but in Fig. 20 the rotation of cam has caused pawl 81 to bedisengaged while pawl 88 remains in engagement with the teeth of gearI8. If the operator now releases the left hand side of chain 55 thecoiled spring 15 will oscillate the yoke 58 and wheel 58 back to itsstarting position, the other parts, however, remaining unaiected (Fig.20a).

The operator may now pull on the right hand side of chain 55 to rotatethe wheel 50 in a clockwise direction (Fig. 21). During this movement ofthe wheel 58 the valve actuating mechanism is unaffected since the bolt63 will idle over the teeth 51 of the wheel 58. However, the shaft 5|will be rotated as will the eccentric 19 at the end of said shaft. Therotation of the eccentric 19 through one complete revolution Will rockthe frames 83, 84 rst to the left (as shown Fig. 21) when the frameshave rocked to one extreme and the pawl 88 engages a tooth of gear I8,and then to the right (Fig. 2'2) so as to cause the pawl 88 to rotatethe gear I8 in an amount equal to the spacing of one tooth. Acontinuation of the rotation of the wheel 58 in a clockwise directioncauses aY continuation of the oscillating of the frame 83, 84, and everytime said frame swings to the right (referring to the diagrams 2.1 and22) the gear wheel I8 will be rotated through one tooth until nally acomplete revolution of said gear is effected and further rotation isarrested by the impingement of pin 9| against the stop lever 92. Afterthe gear Wheel I8 and, of course,

the blower tube T have been rotated through a complete revolution thevalve 35 may be closed by again pulling on the left'side of chain 55, asshown in the diagram Fig. 23. The rotation of the cam 66 through anangle of 90, to effect the closing of the valve 35, also rotates thehollow shaft 52 through an angle of 90, which changes the positions ofthe cams 00, 8| so that both of the pawls 81, 88 will be released toengage the gear wheel I8. If the operator now releases the left side ofchain 55 the yoke 58 will be restored to its normal position under theaction of spring 15 and the parts are again in an at rest position, asshown in diagram Fig. 24. However, the stop pin 9| is on the oppositeside of the stop lever 92 from what it was in the previous at restposition (Fig. 19), and the cams 80, 8| are in neutral position so thatwhen the valve 35 is again opened, as the first step in the operation ofthe blower, the pawl 88 will be held out of engagement with the gear I 8and the pawl 81 will actuate the said gear in the opposite directionfrom that in which it was rotated to effect the previous blowingoperation.

In the modified form of device shown in Figs. 25 to 36, inclusive, towhich reference is now made, the steam supply valve is actuated by a cam|00, similar to the cam 66 of the main form, said cam I 00 being formedintegrally with a fourtoothed ratchet |0I, similar to ratchet 65, exceptthat the ratchet |0| has a nub |02 formed on it at the base of eachtooth |03. A lever |04 adjacent to ratchet |0| is rotatably mounted nearthe outer end of a hollow shaft |05 carried in the spaced bearingbrackets |06, |01 of the bracket member |08, which is secured to branchI6 of the valve casing I6. The lever |04 has a housing |09 projectinglaterally from it, and a pawl l |0 is pivotally mounted on a pin fixedin the outermost part I|2 of said housing. The pawl ||0 is formed withtwo points ||3 and I|4 laterally spaced and also radially spaced withrespect to the rotation axis of the lever |04, the point ||4 being theoutermost. The point 3 is adapted to cooperate with the ratchet |0| forthe actuation of the steam supply valve, as will be eX- plained inconnection with the operation of this modified form of device, while thepoint ||4 engages with the ratchet ||1. However, when the lever |04 isin its idle, resting position the point I I3 rests on one of the nubs|02 to hold both points |I3 and ||4 free from their respective ratchets.The lever |04 has a short arm |04', on the end of which is an inwardlyprojecting finger |04 adapted to engage a projection |08 extendingforwardly from the bracket member |08 so as to limit the movement of thelever |04 upwardly. On the side of the lever |04, opposite the housing|09, is a triangular projection II5 adapted to impinge on the projection|08 to limit the lever |04 in its downward movement.

A shaft |6 is mounted within the hollow shaft |05, said shaft extendingbeyond the hollow shaft |05 at both the forward and rearward endsthereof. A ratchet wheel 1, having a clutch member I I 8 formedintegrally with it, is slidingly connected to or feathered on the shaft||6 a short distance from the outer end thereof, and a coiled spring ||9disposed between the hub h of wheel ||1 and a plate |20 serves to holdthe clutch member ||8 in engagement with hub |2| of a second lever Lkeyed or otherwise secured on the outer end of hollow shaft |05. Aspring S is coiled loosely around the hub |20 of lever L and has one endfixed to lever |04 and the other end fixed to lever L so as to restoresaid levers to their upright positions after having been pulled down.The member ||8 has a socket |22 formed on the side opposite the hub h,in which socket there are equally spaced ribs |23 for cooperating withsimilarly disposed grooves |24 on the adjacent face of hub |2| of leverL, the engaging surfaces of ribs |23 and grooves |24 being so shapedthat a rotation of hub h will force the ribs out of the grooves. Ofcourse the spring ||9 yields to the lateral move of the hub h on thewheel I1. The outer end of shaft |6 is screw-threaded to receive a nut|25 which serves to hold the plate |20 in place. It will be observed(Fig. 28) that the point ||4 of pawl ||0 is disposed for cooperationwith the teeth of ratchet II1. A clevis |26 is keyed or otherwise fixedon the inner end of shaft I 05, just inside the bearing |01 and above agear |21 secured to the blower tube T in any desirable manner. Two pawls|28 and |29 are pivotally connected in spaced relation to the clevis |26in such manner that when said pawls are allowed to drop of their ownweight their points |30, |3I, respectively, will engage with the teethof gear wheel |21. However, in operating the blower only one of saidpawls is actuated at a time and the other pawl must be withdrawn fromengagement with the gear |21.

This is accomplished by means of a member |32 that may be called asetting plate, because said member is provided with lugs |33 and |34 forengagement with bosses |35, |36 of the respective pawls to move saidpawlsv away from gear |21. The setting plate 32 is fixed on the innerend of shaft |I6 so that when said shaft is actuated to open or closethe main steam valve the pawls |28 and |29 will be set in position toproperly rotate the gear |21. An operating chain |31 is attached to thelever |04 and chain |38 is attached to the lever L. A stop member |39 isfixed on the hollow shaft |05 and has lugs |39', |39 projecting from itand spaced an amount corresponding to the throw of the'lever L which isarrested either on its downstroke or upstroke by the impingement of oneor the other lugs |39 on the lug |4I formed on bracket |08.

The operator pulls on the chain |31 connected to lever |04 to rock saidlever downwardly, and in so doing the points I3 and I4 engage ratchets|0| and II1, respectively, to rotate said ratchets through an arc of 90after which the lever |04 is arrested by the impingement of theprojection I I5 against the stop member |08. As the ratchet |0| isrotated the cam'|00 will also be rotated through an arc of 90 to depressthe valve stem 38 and open the steam supply valve. The rotation of theratchet I|1 also rotates the shaft ||6 and the setting plate |32 fixedon the inner end thereof so that the lug |34 will engage the boss |36 ofpawl |29 to lift said pawl free from the teeth of gear |21.

During the rotation of the ratchet ||1 the spring ||9 will hold clutch||8 in engagement with hub I2| of lever L tending to move said leverupwardly but stop member |39 will engage lug |4| of bracket I 08 toprevent any upward movement of the leverL. I now have the position shownin Fig. 3l with the valve stem 38 fully depressed by the cam |00 and thepawl |28 in position (Fig. 32) to impart rotative impulses to the gear|21. These impulses are imparted to said gear by pulling downwardly onthe right hand chain |38 after first releasing the chain |31 to allowthe lever |04 to return to its uppermost position shown in Fig. 27.During this return movement of the lever |04 the points ||3, ||4 of pawlride idly over the ratchets and |0| until the lever |04 comes to rest,at which time the point ||3 is resting on one of the nubs |02 so as tohold the point IIA clear of the ratchet teeth The operator may now pulldown wardly on the chain |38 so as to oscillate the lever L and rock thehollow shaft and shaft IIB which also rocks the setting plate |32 andthe clevis |26 to straighten out the joint between pawl |28 and saidclevis, and thereby impart a rotation impulse to the gear |2'l. If theoperator now releases the chain |38 the lever L will be pulled backupwardly by the spring S, restoring the clevis |26 and pawl |28 to theposition shown in Fig, 32 so that the next impulse may be given. Whenthe lever L is in its lowermost position the parts are in the positionsshown in Figs. 33 and 34. Thus, every time the lever L is pulleddownwardly the gear |21 is rotated an amount equal to the pitch of theteeth of gear |21.

When the blowing operation has been com pleted the stop pin 9| willengage the opposite side of the lug 92. The lever |04 is now rockeddownwardly in the same manner as before to rotate the cam |00 through anarc of 90, which releases the valve stem 38 and permits the steam supplyvalve to close. During this last movement of the lever |04 the settingplate |32 will be rotated 90 beyond the position shown in Fig. 32, whichbrings the lug |33 opposite to the position it occupied in Fig. 29.'I'he next time the blower is operated the movement of the lever |04will rotate the setting plate |32 through an arc of 90 causing the lug|33 to impinge on the pin |35 and lift the pawl |28, the pawl |29remaining in engagement with the teeth of the wheel |21. We now havejust the reverse position from that shown in Fig. 32. The pawl |28 israised free from the teeth of the wheel |21 and pawl |29 is inengagement with said teeth. Therefore, when the lever L is actuated torotate the blower the blower will be advanced step by step by the pawl|29 in the opposite direction to its movement when it was actuated bythe pawl |28.

Having described my invention, I claim:

1. A boiler cleaner comprising a rotatory soot blower tube, a steamvalve, a swivel head, and a common means for operating the valve androtating the blower tube, means comprising double acting opposed camsurfaces to operate the valve, said means being associated with thecommon means which is effective thereon when moved in one direction, anda ratchet device to operate the blower tube, said device beingassociated with the common means which is effective thereon when movedin the opposite direction.

2. A boiler cleaner comprising a rotatory soot blower tube, a valvecontrolling the admission of uid thereto, mechanism for operating saidblower tube, and mechanism for operating said valve, the last mechanismcomprising double acting opposed cam surfaces and means for actuatingsaid cam surfaces to advance through approximately 90 steps to controlthe valve, and a single operating device for successively operating thesecond said mechanism and the blower tube.

3. A boiler cleaner comprising a rotatable blower tube, an operatinghead connected with said tube, a valve casing in communication with saidblower tube, a valve in said casing, and operating mechanism carried bysaid valve casing; an operating sheave interconnected with both thevalve and the blower tube, means associated with the operating mechanismfor opening and closing the valve with a rotation of the sheave in onedirection, the construction and arrangement of the parts being such thata rotation of the sheave in the reverse direction operates to rotate theblower tube between the opening and the closing of the valve.

FREDERICK W. LINAKER.

